قَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: "إِذَا دَفَنْتَ فِي اَلْأَرْضِ شَيْئاً فَأَشْهِدْ عَلَيْهَا فَإِنَّهَا لاَ تُؤَدِّي إِلَيْكَ شَيْئاً".
Imam Jafar ibn Muhammad Al-Sadiq (a.s) said: "If you bury something in the ground, have witnesses for it, for the earth will not return anything to you."